NAVY TT-C-492 C-1974 COATING COMPOUND PAINT ANTISWEAT《防露漆涂层混合物》.pdf

1、TC-C-492C May 31, 1974 SUPERSEDING Int. Fed. Spec, TT-C-00492B (MA-FSS) March 2, 1972 and Fed. Spec. TC-C-492A May 23, 1966 FED- SPECIFICATION COATING COMPOUND, PAINT ANTISWEAT This specification was approved by the Commissioner, Federal Supply Service, General Services Administration, for the use o

2、f all Federal agencies. 1. SCOPE AND CLASSIFICATION 1.1 e. This specification covers a compound applied by brush or spray to provide antisweat protection on surfaces subject to condensation. 1.2 Classification. 2. APPLICABLE DOCUMENTS The compound shall be of one type and class only. 2.1 The followi

3、ng documents of the issues in effect on date of invitation for bids or request for proposal, form a part of this specification to the extent specified herein: Federal Specifications: QQ-S-698 - Steel, Sheet and Strip, Low-Carbon. rCr-P-143 - Paint, Varnish, Lacquer, and Related Materials; Packaging,

4、 Packing and Marking Of. TT-P-636 - Frimer Coating, Alkyd, Wood and Ferrous Metal. TC-T-egi - Thinner; Paint, Volatile Spirits, Petroleum Spirits. Federal Standards: Fed. Test Method Sta. No. i41 - Paints, Varnish, Lacquer, and Materials; Methods of Inspection, Fed. Std. No. 595 - Colors. Sampling a

5、nd Testing. (Activities outside the Federal Government may obtain copies of Federal Specifications, Standards, and Handbooks as outlined under General Information in the Index of Federal Specifications and Standards and at the prices indicated in the Index. supplenients as issued, is for sale on a s

6、ubscription basis by the Superintendent of Documents, U.S. Government-Printing Office , Washington, DC The Index, which includes cumulative monthly 20402. (Single copies of this specification and other Federal Specifications required by activities outside the Federal Government for bidding purposes

7、are available without charge from Business Service Centers at the General Services Administration Regional Offices in Boston, New York, Washington, DC, Atlanta, Chicago, Kansas City, MO, Fort Worth, Denver, San Francisco, os Angeles, and Seatfle, WA. (Federal Government activities may obtain copies

8、of Federal Specifications , Standards, and Hand- books and the Index of Federal Specifications and Standards from established distribution points in their agencies. ) 2.2 Other publications. The following documents form a part of this specification to the extent specified herein. for bids or request

9、 for proposal shall apply. Unless a specific issue is identified, the issue in effect on date of invitation American Society for Testing and Materials (ASTM) Standards: E 70 D 476 D 2088 - Method of Test for pH of Aqueous Solutions with Glass Electrode. - Titanium Dioxide Pigments. - Test for Low Co

10、ncentration Lead. (Application for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street , Philadelphia , PA 19102. ) mc 8010 Licensed by Information Handling ServicesTT-C-492C 80 = 7777974 0004738 1 TT-C-492C 3. FEQUIm 3.1 The compoundas received shall consi

11、st of suitable pigment and vehicle, so combined as to produce a compound, meting all the requirements of this specification. 3.2 Pigments. The pigments shall consist of titanium-dioxide conforming to ASTM D 476, type I and suitable extenders provided the product meets all the requirements. 3.3. Vehi

12、cle. The manufacturer is given latitude in the selection of materials providing the finish product conforms to this specification. .The volatile solvent used in the process shall be a thinner conforming to W-T-291 type II, grade A or a solvent system complying with “Rule 66!,* 3.4 Quantitative requi

13、rements. 3.4.1 The quantitative requirements of the coating compound shall be as specified in table I and as herein specified TABLE I. Quantitative requirements Requirements Characteristics Minimum Maximum - - Coverage sq. ft. gallon 132“ wet film 50 Viscosity (Stormer secons)g 60 - Drying time (hou

14、rs) hard I- Vehicle (percent by weight of product) - 60 Flash point (Pensky Martin - OF.) 95 pH value 9 Weight per gallon 9.8 10.2 Pigment (percent by weight of product) 28 32 pigment) 9 11 pigment) 89 91 Nonvolatiie (percnt by ?ie!gkt of product) 40 8 - - Titanium dioxide (percent by weight of extr

15、acted atender or other pigments (percent by weight of Lead (metal), percent by weight of total nonvolatile - o. 5 y Stormer viscosimeter - 100 r.p.m.; lo00 grams at 7T0F., paddle type mixer, 3.5 Qualitative requirements. 3.5.1 Condition in container. The compound as received shall be well mixed and

16、ready for use. There shall be no caking or thickening to such a degree it cannot be redispersed easily with a paddle when tested as in 4.3.3. 3.5.2 Brushing property. The coating compound shall be capable of being Frushed on primed or sealed surfaces as tested in 4.3.4. application due to the high v

17、iscosity and fibrous nature of the material). (Certain amount of pulling is unavoidable with brush 3.5.3 Spraying property. The coating compound shall be readily applied by the use of airless spray equipment or pot-type pressure spray equipped with self-cleaning nozzle. (See 4.3.5). The odor of the

18、compound during and after application shall not be pungent. 3.5.4 E. 3.5.5 Color. 3.5.6 Fire resistant. The color shall mtch the standard agreed upon by the purchaser and the supplier and shall match the color standard specified in Fed. Std. No. 595. char of not greater than 6 inches and the combust

19、ion plus ignition time shall not exceed 4-i/4 minutes as specified in 4.3.8. tested in 4.3.9. of use (See 4.3.10). The coating compound shall not support combustion, shall have an average 3.5.7 Condensation. There shall be no condensation on the dried coating within 8 hours as 3.5.8 Toxicity. The co

20、ating compound shall not be toxic to personnel under normal condition * Information on Rule 66 should be obtained from Air Pollution Control District, County of Los Angeles, Calfornia 9oOOi. 2 Licensed by Information Handling Services_ TT-C-472C 80 m 7777774 0004737 3 m l?T-C-492C 4. QUALITY ASSURAN

21、CE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified, the supplier may utilize his own facilities or any comerci

22、al labor- atory acceptable to the Government. tions set forth in the specification where such inspections are deemed necessary to assure that supplies and services conform to the prescribed requirements. 4.2 Classification of inspection. Inspection shall be classified as follows: The Government rese

23、rves the right to perform any of the inspec- (a) Production inspection of the coating. . (b) Inspection of preparation for delivery (see 4.3.15). 4.3 Production inspection. 4.3.1 Sampling and inspection. Method Sta. No. 141, section 1000. 4.3.2 Test procedures. Sampling and inspection shall be in ac

24、cordance with Fed. Test The coating compound shall be tested in accordance with the following applicable methods of Fed. Test Method Sta. No. 141 as iqdicated in table II and as hereinafter specified. cause for rejection of the lot. Failure to pass any test and noncompliance to the requirements in t

25、able I shall be TABE II. Index Characteristics Reference . TESTS Requirement Fed. Test Method Paragraph Sta. No. 141 Reference Condition in container 3.5.1 301-1 4.3.3 Brushing property 3.5.2 - 4.3.4 Spraying prperty 3.5.3 - 4.3.5 Odor 3.5.4 - 4.3.6 Color 3.5.5 - 4.3.7 Fire resistant 3.5.6 - 4.3.8 C

26、ondensation 3.5.7 - 4.3.9 Toxicity 3.5.8 - 4.3.10 Coverage Table I - 4.3.11 Nonvolatile Table I 4041 - 4281 -_ Viscosity Table I Drying time Table I - 4.3.12 Vehicle Tahle I 4051 - Flash point Table I 4293 pH value Table I - 4.3.13 Weight per gallon Table I 4184 - Pigment content Table I 4021 - Tita

27、nium dioxide Table I 7081 - - Lead content Table I -.- - - 4.3.14 4.3.3 Condition in container. Examine the coating compound as received for compliance as specified in 3.5.1 in accordance with method 3011 of Fed. Test Method Std. No. 141. 4.3.4 Brushing property. primer coating, CT-P-636, at a rate

28、of 450 square feet/gallon. room temperature for 72 hours. 3- or 4- inch nylon brush (do not use brfstle brush) on one of the panels. for pulling as specified in 3.5.2. Prewe two 6 x 8 inches steel panels (QQ-S-698), clean and prime with Apply the thoroughly mixed coating compound without; diluting w

29、ith a Allow the primer coating to dry at Observe while brushing 4.3.5 Spraying property. Spray the coating compound on the other primed panel prepared in 4.3.4 using airless spray equipnent with appropriate nozzle. Observe the ease of application. 4.3.6 E. 4.3.7 Color. 4.3.8. Fire resistant. Observe

30、 the odor of the coating compound as applied in 4.3.4. The brushed film, as applied in 4.3.4, shall match to the standard agreed upon by the purchaser and supplier and shall match colorstandard in Fed. Std. No. 595. 3 Licensed by Information Handling ServicesTT-C-47ZC 80 7777774 0004740 T W TT-C-492

31、C . 4.3.8.1 Apparatus. as shown on figures 1, 2, and 3 which consist of communicating horizontal and vertical flues con- structed of asbestos board lined steel sheets with the expansion of the horizontalbbttom plate which is all steel. The enclosure shall be 36 inches long overall; flue shall be 8 i

32、nches wide 6 inches high. The horizontal bottom plate shall be cut away 3 inches at the firing end to provide clearance for the flames of four open blast burners. Details of the test hood and specimen holder are shown on figure 4. figure 5. list.) The compound shall be applied to the specimen holder

33、 shown on figure 4, by a drawdown method which will produce a dry film thickness of 1/32 inch, onto the steel plate (i18 inch thick) that have been prepared by removing all rust, mill scale and organic matter and finish off by grinding the surface with No. 24 grit abrasive cloth or paper. The covere

34、d steel specimens shall be cured for 96 hours before conducting tests. and testing shall be conducted under atmospheric conditions at a temperature of 70 to 75%. and a relative humidity of 50 2 2 percent. long by 7 inches wide with longitudinal flanges for mounting in the horizontal flue) shall be s

35、ecured in the flue, 2 inches above the bottom plate and with the inner end spaced 3 inches from the flue end, to permit hot gases passing beneath the holder to be vented through the vertical flue. the holder, on 1-3/4-inch centers, equidistant from each side of the flue. shall be located 4 inches be

36、low the bottom surface of the holder, and shall be 112 inch in front of the firing end of the holder. 2,550 B.t.u. per cubic foot at a temperature of 600. and atmospheric pressure of 30 inches of mercury. feet per hour, respectively, when referred to standard conditions of 60%. and 30 inches Of merc

37、ury The burner flames shall be applied for four minutes and then immediately removed. A draft of 0.06- 0.01-0.00 inch of water shall be maintained in the flue of the apparatus for the duration of the test. The fire resistance of the compound shall be determined by an apparatus Details of the burner

38、supply manifold and open burner nozzle are shown on A schematic flow diagram for the apparatus is shown on figure 6. (See 6.4 for parts 4.3.8.2 Procedure. Unless otherwise specified herein, all curing The holder (i18 inch thick mild steel plate 31-112 inches The four open blast burners shall be loca

39、ted side by side and parallel to the front end of The center of the burneb The gas used shall be commercial propane having a heating value of The gas and air shall be supplied to a common manifold at rate of 9.6 and 150 cubic 4.3.8.3 Measurement. Ignition plus combustion time and average char shall

40、be noted. These quantities are defined as follows: (a) (b) Average char. Ignition plus combustion time. flames until all flaming of the specimen ceases. over the entire width of the specimen. and glowing ceases. The time taken from the initial application of the burner Length of the specimen permane

41、ntly damaged by burning and charing as average- This measurement shall be taken arter all flaming 4.3.9 Condensation. This test shall be conducted using the equipment shown in figure 7. The cylinders, coated with 1/32 inch dry film thickness of the compound, are filled with ice cubes and interior of

42、 the cabinet is mintained at a temperature of 680 + 2%. and a relative humidity of 67 f. 2 percent which is obtajned by inserting in the cabinet a-tray containing a saturated solution of monoammonium phosphate. pliance as specified in 3.5.7. water and maintained at a temperature between 32O and 38OF

43、. throughout the test period. The Examine the reciptacle (graduate) every hour during the test for com- 4.3.10 Toxicity. A suppliers certified statement that the material is not toxic under normal condition of use is necessary. a coverage of at least 50 square feet per gallon and 1/32 inch dry film

44、thickness is acceptable. 2011 of Fed. Test Method Std. No. 141) using a doctor blade producing 1/16-inch wet film thickness and allow to dry in almost vertical position. 4.3.ll Coverage. A certified statement from the supplier that the coating compound shall have 4.3.E Drying time. Apply a thoroughl

45、y stirred coating material to a steel panel (see method Examine for compliance as specified in table I. 4.3.13 pH value. 4.3.14 Test for lead content shall be in accordance with ASTM D 2088. ASTI4 E 70 may be used for determination of the pH value. r/ Information on the apparatus may be obtained fro

46、m U.S. Naval Ship Engineering Center, Prince Georges Plaza, Hyattsville, Maryland 20782. 4 Licensed by Information Handling ServicesTT-C-492C 0 W 7979774 0004741 1 4.3.14.1 Calculation. Lead (Percent by weight of total non-volatile) = A x 0.86623 100 B Were: A = Grams of lead oxide (PbO ) in ash. B

47、= Grams of total nonvoatiSe of paint or dried paint film. 4.3.15 Inspection of preparation for delivery. The packaging, packing, and marking shall be inspected to determine conformance to the requirements of section 5 of this specification. 5. PREPARATION FOR DELJIVERY 5.1 Packaging, packing, and ma

48、rking. The coating compound furnished in 1 gallon cans or 5 gallon pails shall be packaged, packed, and marked in accordance with 93-P-143. packaging shal1:be A, B, or C-, and the level of packing shall be level A, B, or C as specified (see 6.2). The level of 6. NOTES 6.1 Intended use. The coating c

49、ompound is intended for application on susfaces such as concrete, plaster wall, asbestos sheeting, iron, steel, galvanized or zinc coated metal, aluminum, copper and brass tubing, bituminous or cresote coated surfaces that are subjected to intermittent condensation. The material is not intended to be used where condensation is continuous or where there is no chance of recovery period. 6.2 Ordering data. Purchasers should select the preferred options permitted herein and include the following information